91122358207 has 4 divisors (see below), whose sum is σ = 94264508520. Its totient is φ = 87980207896.

The previous prime is 91122358163. The next prime is 91122358219. The reversal of 91122358207 is 70285322119.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91122358207 - 2⁷ = 91122358079 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91122358207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91122358237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571075113 + ... + 1571075170.

It is an arithmetic number, because the mean of its divisors is an integer number (23566127130).

Almost surely, 2^91122358207 is an apocalyptic number.

91122358207 is a deficient number, since it is larger than the sum of its proper divisors (3142150313).

91122358207 is a wasteful number, since it uses less digits than its factorization.

91122358207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142150312.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 91122358207 in words is "ninety-one billion, one hundred twenty-two million, three hundred fifty-eight thousand, two hundred seven".